TY - BOOK AU - Jones,W.I. AU - Egli,Roberto TI - Farming systems in Africa: the great lakes highlands of Zaire, Rwanda, and Burundi SN - 0821303988 AV - S472.C46.J66 1984 PY - 1984/// CY - Washington, D.C. PB - World Bank KW - Agricultural systems KW - Agriculture KW - Agricultural innovations KW - Soil conservation N1 - Summaries in French and Spanish ER -